package map;

import java.util.HashSet;

public class Test2 {
    public static void main(String[] args) {
        HashSet<String> hs = new HashSet<>();
        String s1="卢";
        String s2="51fun";
        System.out.println(s1.hashCode());
        System.out.println(s2.hashCode());

        System.out.println(15 & s1.hashCode());
        System.out.println(15 & s2.hashCode());
        hs.add(s1);
        hs.add(s2);
        System.out.println(hs);

        hs.clear();
        hs.add(s1);
        hs.add(s2);
        System.out.println(hs);
    }
}
